11 mark
The correct form of the solubility product for calcium phosphate, Ca3(PO4)2, is
[Ca2+][PO43–]
[Ca2+]2[PO43–]3
[Ca2+]3[PO43–]2
[Ca2+]3[PO3–]4
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Solubility Equilibria (College Board AP® Chemistry)
Exam Questions
20 mins8 questions21 mark
Ca(NO3)2 + K2SO4 → CaSO4 + 2KNO3
Ksp = 2.00 x 10-5 at 298 K
100 mL of a 1.70 x 10-3 M solution of calcium nitrate is slowly added to 100 mL of 1.50 x 10-3 M potassium sulfate.
Which of the following will be observed?
A precipitate forms because Q > Ksp
A precipitate forms because Q < Ksp
No precipitate forms because Q > Ksp
No precipitate forms because Q < Ksp
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31 mark
A saturated solution of Sr(OH)2 has a pH of 12.50. What is the solubility product of Sr(OH)2?
3.28 x 10-5
1.64 x 10-5
1.58 x 10-38
5.12 x 10-4
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41 mark
Addition of the following salts will affect the solubility of ZnCO3 except
H2SO4
NaHCO3
ZnNO3
Na2SO4
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